Modifications for your 5.3L Vortec V8 engine are a lot like eating potato chips ... you can't stop at just one. It starts innocently enough with a cold air intake, because hey, who doesn't want better ...

Ever since the small-block Chevy was introduced 50 years ago, engineers, racers, and backyard hot rodders have delved into its cylinder heads in the quest for more power. Chevrolet did an admirable ...